 Spain: Madrid - Doubles - Main |
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| 1/16-finals | Wang Xin./Zheng S. | Niculescu M./Parks A. | 2:0 (6:1, 6:3) | details | 25.04.2024 |
 France: Rouen - Doubles - Main |
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| 1/8-finals | Kato M./Niculescu M. | Hibino N./Kalashnikova O. | 1:2 (6:3, 5:7, 8:10) | details | 17.04.2024 |
 USA: Miami - Doubles - Main |
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| 1/8-finals | Kenin S./Mattek-Sands B. | Kalashnikova O./Niculescu M. | 2:0 (6:3, 6:4) | details | 25.03.2024 |
| 1/16-finals | Kalashnikova O./Niculescu M. | Schuurs D./Stefani L. | 2:1 (2:6, 6:2, 10:6) | details | 24.03.2024 |
| USA: Charleston - Doubles - Main |
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| Semi-finals | Khromacheva I./Niculescu M. | Errani S./Mihalikova T. | 0:2 (4:6, 3:6) | details | 15.03.2024 |
| Quarter-finals | Khromacheva I./Niculescu M. | Kumkhum L./Plipuech P. | 2:1 (6:3, 3:6, 10:6) | details | 14.03.2024 |
| 1/8-finals | Khromacheva I./Niculescu M. | Chang S./Kulikov A. | 2:0 (6:3, 6:1) | details | 13.03.2024 |
| USA: Indian Wells - Doubles - Main |
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| 1/16-finals | Dolehide C./Krawczyk D. | Minnen G./Niculescu M. | 2:1 (6:3, 5:7, 11:9) | details | 09.03.2024 |
 United Arab Emirates: Dubai - Doubles - Main |
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| 1/16-finals | Linette M./Niculescu M. | Chan H-C./Olmos G. | 1:2 (6:1, 2:6, 4:10) | details | 19.02.2024 |
 Qatar: Doha - Doubles - Main |
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| Quarter-finals | Bucsa C./Niculescu M. | Dolehide C./Krawczyk D. | 0:2 (3:6, 65:7) | details | 15.02.2024 |
| 1/8-finals | Kato M./Sutjiadi A. | Bucsa C./Niculescu M. | 0:2 (2:6, 5:7) | details | 13.02.2024 |
| 1/16-finals | Kudermetova V./Panova A. | Bucsa C./Niculescu M. | 0:2 (2:6, 5:7) | details | 11.02.2024 |
| United Arab Emirates: Abu Dhabi - Doubles - Main |
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| 1/8-finals | Bucsa C./Niculescu M. | Dolehide C./Krawczyk D. | 0:2 (4:6, 5:7) | details | 05.02.2024 |
 Australia: Australian Open - Doubles - Main |
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| 1/32-finals | Gamarra Martins I./Niculescu M. | Errani S./Paolini J. | 0:2 (3:6, 1:6) | details | 17.01.2024 |
| Australia: Adelaide - Doubles - Main |
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| 1/8-finals | Bogdan A./Niculescu M. | Muhammad A./Schuurs D. | 0:2 (62:7, 4:6) | details | 08.01.2024 |
| Australia: Brisbane - Doubles - Main |
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| 1/16-finals | Kasatkina D./Saville D. | Marozava L./Niculescu M. | 2:0 (6:2, 6:4) | details | 31.12.2023 |
| France: Angers - Doubles - Main |
|---|
| Final | Bucsa C./Niculescu M. | Danilina A./Panova A. | 2:0 (6:1, 6:3) | details | 10.12.2023 |
| Semi-finals | Bucsa C./Niculescu M. | Dzalamidze N./Moratelli A. | 2:0 (6:3, 6:2) | details | 09.12.2023 |
| Quarter-finals | Bucsa C./Niculescu M. | Kalashnikova O./Lumsden M. | 2:0 (6:4, 6:1) | details | 07.12.2023 |
 World: Billie Jean King Cup - World Group - Doubles - Relegation - Play Offs |
|---|
| | Kozarov K./Krunic A. | Niculescu M./Todoni A. A. | 0:2 (1:6, 63:7) | details | 11.11.2023 |
| | Kozarov K./Stevanovic N. | Bara I./Niculescu M. | CAN. | details | 11.11.2023 |
 Romania: Cluj-Napoca - Doubles - Main |
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| Semi-finals | Friedsam A-L./Niculescu M. | Jeanjean L./Strakhova V. | 1:2 (6:2, 66:7, 9:11) | details | 20.10.2023 |
| Quarter-finals | Bara I./Cristian J. | Friedsam A-L./Niculescu M. | 0:2 (4:6, 1:6) | details | 18.10.2023 |
| 1/8-finals | Collins A./Gamiz A. | Friedsam A-L./Niculescu M. | 1:2 (2:6, 6:3, 5:10) | details | 16.10.2023 |
 China: Zhengzhou - Doubles - Main |
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| 1/8-finals | Gamarra Martins I./Stefani L. | Kichenok N./Niculescu M. | 2:0 (6:3, 6:0) | details | 10.10.2023 |
| China: Beijing - Doubles - Main |
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| 1/8-finals | Haddad Maia B./Kudermetova V. | Kichenok N./Niculescu M. | 2:0 (6:0, 6:3) | details | 04.10.2023 |
| 1/16-finals | Kichenok N./Niculescu M. | Aoyama S./Shibahara E. | 2:0 (6:3, 6:3) | details | 01.10.2023 |
 Mexico: Guadalajara - Doubles - Main |
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| Quarter-finals | Hunter S./Mertens E. | Guarachi A./Niculescu M. | 2:0 (6:3, 6:1) | details | 21.09.2023 |
| 1/8-finals | Guarachi A./Niculescu M. | Kudermetova V./Potapova A. | WO. | details | 19.09.2023 |
| 1/16-finals | Davis L./Montgomery R. | Guarachi A./Niculescu M. | 1:2 (5:7, 7:65, 10:12) | details | 18.09.2023 |
| USA: San Diego - Doubles - Main |
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| 1/8-finals | Guarachi A./Niculescu M. | Aoyama S./Yang Z. | 0:2 (1:6, 5:7) | details | 13.09.2023 |
| USA: US Open - Doubles - Main |
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| 1/32-finals | Chang S./Parks A. | Guarachi A./Niculescu M. | 2:0 (6:3, 6:4) | details | 30.08.2023 |
 Canada: Montreal - Doubles - Main |
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| 1/16-finals | Eikeri U./Neel I. | Guarachi A./Niculescu M. | 2:1 (6:3, 64:7, 10:4) | details | 08.08.2023 |
| USA: Washington - Doubles - Main |
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| Final | Siegemund L./Zvonareva V. | Guarachi A./Niculescu M. | 2:0 (6:4, 6:4) | details | 05.08.2023 |
| Semi-finals | Guarachi A./Niculescu M. | Aoyama S./Dabrowski G. | 2:0 (6:3, 6:1) | details | 04.08.2023 |
| Quarter-finals | Guarachi A./Niculescu M. | Chan H-C./Olmos G. | WO. | details | 03.08.2023 |
| 1/8-finals | Guarachi A./Niculescu M. | Marozava L./Gamarra Martins I. | 2:0 (7:64, 7:5) | details | 02.08.2023 |
 Poland: Warsaw - Doubles - Main |
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| 1/8-finals | Watson H./Wickmayer Y. | Dzalamidze N./Niculescu M. | CAN. | details | 25.07.2023 |
| Romania: Iasi - Doubles - Main |
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| Final | Bara I./Niculescu M. | Erjavec V./Jakupovic D. | 0:2 (4:6, 4:6) | details | 23.07.2023 |
| Semi-finals | Bara I./Niculescu M. | Perrin C./Rogers A. S. | 2:0 (6:2, 6:1) | details | 22.07.2023 |
| Quarter-finals | Bara I./Niculescu M. | Amariei I. D./Todoni A. A. | 2:0 (6:1, 7:5) | details | 20.07.2023 |
 United Kingdom: Wimbledon - Doubles - Main |
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| 1/32-finals | Niculescu M./Podoroska N. | Hruncakova V./Mihalikova T. | 1:2 (6:1, 66:7, 1:6) | details | 07.07.2023 |
 Germany: Bad Homburg - Doubles - Main |
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| Final | Marozava L./Gamarra Martins I. | Hozumi E./Niculescu M. | 2:0 (6:0, 7:63) | details | 02.07.2023 |
| Semi-finals | Mihalikova T./Ninomiya M. | Hozumi E./Niculescu M. | 1:2 (7:65, 4:6, 8:10) | details | 30.06.2023 |
| Quarter-finals | Hozumi E./Niculescu M. | Sizikova Y./Zimmermann K. | 2:1 (6:2, 3:6, 10:8) | details | 28.06.2023 |
| 1/8-finals | Dzalamidze N./Santamaria S. | Hozumi E./Niculescu M. | 0:2 (5:7, 4:6) | details | 25.06.2023 |
| France: French Open - Doubles - Main |
|---|
| 1/32-finals | Niculescu M./Ninomiya M. | Babos T./Danilina A. | 0:2 (1:6, 1:6) | details | 01.06.2023 |
 Morocco: Rabat - Doubles - Main |
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| Semi-finals | Santamaria S./Sizikova Y. | Niculescu M./Ninomiya M. | 2:1 (1:6, 6:4, 12:10) | details | 25.05.2023 |
Italy: Rome - Doubles - Main